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Finding the Fourth Proportional to 84,713.74, 127,269.18 and 79,926.28

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Solution

The fourth proportional to 84,713.74, 127,269.18 and 79,926.28 is: 120,076.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,713.74 : 127,269.18 = 79,926.28 : x
  2. Step 2: Convert to fraction form
    84,713.74/127,269.18 = 79,926.28/x
  3. Step 3: Cross multiply
    84,713.74x = 127,269.18 × 79,926.28
  4. Step 4: Simplify right side
    84,713.74x = 10,172,152,116.05
  5. Step 5: Solve for x
    x = 10,172,152,116.05/84,713.74
  6. Step 6: Final answer
    x = 120,076.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.